.content{
    display: flex;
    .sider{
        height:100%;
        width: 200px;
        box-sizing: border-box;
        border-right: 1px solid #f9f9f9;
        .list{
            padding: 10px;
            text-align: center;
            &:hover{
                border-bottom: 2px solid deeppink;
                cursor: pointer;
            }
        }
    }
    .main{
        flex: 1;
    }
}

